JP4330646B2 - Casting mold equipment - Google Patents

Casting mold equipment Download PDF

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Publication number
JP4330646B2
JP4330646B2 JP2007281096A JP2007281096A JP4330646B2 JP 4330646 B2 JP4330646 B2 JP 4330646B2 JP 2007281096 A JP2007281096 A JP 2007281096A JP 2007281096 A JP2007281096 A JP 2007281096A JP 4330646 B2 JP4330646 B2 JP 4330646B2
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Prior art keywords
mold
sliding core
casting
sliding
movable
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JP2009106963A (en
Inventor
清 柴田
敏朗 市原
敏郎 林
敬三 田上
正光 山下
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2007281096A priority Critical patent/JP4330646B2/en
Priority to PCT/JP2008/003001 priority patent/WO2009057263A1/en
Priority to CN200880114287.3A priority patent/CN101842176B/en
Priority to US12/740,592 priority patent/US8091611B2/en
Publication of JP2009106963A publication Critical patent/JP2009106963A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/24—Accessories for locating and holding cores or inserts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

本発明は、可動型に固定型との間で製品キャビティを形成する摺動中子を設けた鋳造金型装置に関する。   The present invention relates to a casting mold apparatus in which a movable core is provided with a sliding core that forms a product cavity with a fixed mold.

エンジンのシリンダヘッドなどは冷却用フィンも含めた複雑形状製品を一体的に鋳造するため、固定型と可動型のみでは離型できず、可動型に複数の摺動中子を設けている。このような摺動中子に関する先行技術としては、特許文献１〜に開示されている。   Since engine cylinder heads and the like are integrally cast with complex shaped products including cooling fins, they cannot be separated only by the fixed type and the movable type, and a plurality of sliding cores are provided on the movable type. As prior art regarding such a sliding core, it is indicated by patent documents 1-.

特許文献１には、可動型に対し四方から接近・離反する摺動型を設け、この４つの摺動型で中子を保持することで、注湯時にシリンダヘッドのシリンダブロックと当接する面が略鉛直方向となるようにした内容が開示されている。   In Patent Document 1, there is provided a sliding type that approaches and separates from the four directions with respect to the movable type, and by holding the core with these four sliding types, the surface that contacts the cylinder block of the cylinder head during pouring is provided. The contents that are substantially vertical are disclosed.

特許文献２には、型締め時にスライド中子（摺動中子）が傾くことを防止するため、スライド中子に可動型にセットした際に可動型と当接する面を有し、またスライド中子の一部を凸部とし、この凸部を型締め時に固定型で受ける構造が開示されている。   In Patent Document 2, in order to prevent the slide core (sliding core) from tilting when the mold is clamped, the slide core has a surface that comes into contact with the movable mold when the movable mold is set on the slide core. A structure is disclosed in which a part of the child is a convex part, and the convex part is received by a fixed mold when the mold is clamped.

特開２０００−３３４５９号公報JP 2000-33459 A 特開２００７−１１１７１３号公報JP 2007-1111713 A

図３は上記した先行技術に係る鋳造金型装置を示す図であり、鋳造金型装置は固定型１０１と可動型１０２からなり、可動型１０２には摺動中子１０３…が設けられ、固定型１０１には摺動中子１０３の凸部１０４の背面テーパ面１０４ ａに当接して鋳造時の圧力を受けるストッパ部１０５と、型締め時の摺動中子１０３の側面１０４ｂに当接する位置決め部１０６が形成され、この位置決め部１０６には可動型１０２の位置決め穴１０７に係合する位置決めピン１０８が設けられている。   FIG. 3 is a view showing a casting mold apparatus according to the above-described prior art. The casting mold apparatus includes a fixed mold 101 and a movable mold 102, and the movable mold 102 is provided with a sliding core 103. The mold 101 is in contact with the tapered surface 104 a of the back surface 104 a of the convex portion 104 of the sliding core 103 and receives a pressure during casting, and is positioned so as to contact the side surface 104 b of the sliding core 103 during mold clamping. The positioning portion 106 is provided with a positioning pin 108 that engages with the positioning hole 107 of the movable mold 102.

従来の鋳造金型装置にあっては、個々のストッパ部１０５が島状に独立して形成されているため、大きな鋳造圧力を受けると変形し、その結果摺動中子１０３が圧力で戻され、摺動中子１０３間に隙間が生じ、この隙間に溶湯が差し込む。
この溶湯の差し込みは製品のバリ発生原因となるだけでなく、そのままにしておくと鋳造金型装置が破損するため、頻繁に差し込んで凝固した溶湯を除去しなければならない。 In the conventional casting mold apparatus, each stopper portion 105 is independently formed in an island shape, so that it deforms when subjected to a large casting pressure, and as a result, the sliding core 103 is returned by pressure. A gap is generated between the sliding cores 103, and the molten metal is inserted into the gap.
Insertion of the molten metal not only causes burrs in the product, but the casting mold apparatus is damaged if left as it is, so the molten metal that has been frequently inserted and solidified must be removed.

また、摺動中子と固定型との間に温度差に起因する熱膨張量の差が生じやすく、この状態で型締めを行うと、摺動中子が一方向に寄せられ、摺動中子の側面に隙間が生じてしまう。   In addition, a difference in the amount of thermal expansion due to the temperature difference is likely to occur between the sliding core and the fixed mold. There will be a gap on the side of the child.

更に、図４は型締め時の断面図であり、従来の鋳造金型装置にあっては、摺動中子１０３の凸部１０４の高さが、製品キャビティＣの高さよりも高いため、ストッパ１０５の有効面積（鋳造圧力を受ける面積）が相対的に少なくなっており、無駄に金型を厚くし重量を増している。   Further, FIG. 4 is a cross-sectional view at the time of clamping, and in the conventional casting mold apparatus, the height of the convex portion 104 of the sliding core 103 is higher than the height of the product cavity C. The effective area 105 (area subjected to casting pressure) is relatively small, and the mold is unnecessarily thickened and weight increased.

上記課題を解決するため、本発明に係る鋳造金型装置は、可動型に固定型との間で製品キャビティを形成する摺動中子を備え、前記固定型の型合わせ面には額縁部が一体的に突出し、この額縁部の内側面に型締め時に前記摺動中子の凸部背面に当接して鋳造圧力を受けるストッパ部が設けられている。   In order to solve the above-described problems, a casting mold apparatus according to the present invention includes a sliding core that forms a product cavity between a movable mold and a fixed mold, and a frame portion is provided on a die-matching surface of the fixed mold. A stopper portion that protrudes integrally and abuts against the rear surface of the convex portion of the sliding core when the mold is clamped is provided on the inner side surface of the frame portion.

本発明において、上下の基準は固定型が上、可動型が下とする。したがって、実際の鋳造金型において、固定型と可動型を左右に配置し型合わせ面が垂直になる場合でも、可動型の背面を高さ基準の底面とする。   In the present invention, the upper and lower standards are the fixed mold is up and the movable mold is down. Therefore, in the actual casting mold, even when the fixed mold and the movable mold are arranged on the left and right sides and the mold mating surface is vertical, the back surface of the movable mold is used as the height-based bottom surface.

また、前記可動型の四隅には摺動中子の凸部と等しい高さの位置決め基準座が設けられ、この位置決め基準座と摺動中子の側面との間にサイドキーが設けられている構成が好ましい。また、前記摺動中子の凸部の高さは、前記製品キャビティの高さと略等しくすることが更に好ましい。   Further, positioning reference seats having a height equal to the convex portion of the sliding core are provided at the four corners of the movable mold, and a side key is provided between the positioning reference seat and the side surface of the sliding core. A configuration is preferred. More preferably, the height of the convex portion of the sliding core is substantially equal to the height of the product cavity.

本発明によれば、固定型の型合わせ面に額縁部を設け、この額縁部の内側面にストッパ部を設けたので、鋳造圧力や、熱膨張による型締め代が過大化し、ストッパーが摩耗、或いは摩滅した場合にストッパー交換のみで済む。   According to the present invention, the frame portion is provided on the mold-matching surface of the fixed mold, and the stopper portion is provided on the inner surface of the frame portion, so that the mold clamping allowance due to casting pressure and thermal expansion is excessive, and the stopper is worn. Or if it wears out, it is only necessary to replace the stopper.

また本発明によれば、固定型ではなく可動型に摺動中子の位置決め基準座を設けたので、固定型と摺動中子との温度差（熱膨張量の差）に起因する隙間も発生せず、バリも発生しない。   Further, according to the present invention, since the positioning reference seat for the sliding core is provided in the movable type instead of the fixed type, the gap caused by the temperature difference (difference in thermal expansion) between the fixed type and the sliding core is also reduced. It does not occur and no burr occurs.

更に本発明によれば、ストッパを従来よりも薄くしても有効面積（受圧面積）は変わらず、鋳造金型装置全体の軽量化が可能になる。   Furthermore, according to the present invention, even if the stopper is made thinner than the conventional one, the effective area (pressure receiving area) does not change, and the weight of the entire casting mold apparatus can be reduced.

以下に本発明の好適な実施例を添付図面に基づいて説明する。図１は本発明に係る鋳造金型装置の型開き状態の斜視図、図２は本発明に係る鋳造金型装置の型締め状態の断面図である。   Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a casting mold apparatus according to the present invention in an open state, and FIG. 2 is a cross-sectional view of the casting mold apparatus according to the present invention in a mold clamping state.

鋳造金型装置は固定型１と可動型２からなり、固定型１の型合せ面の周囲は一体的に連続した額縁部３とされ、この額縁部３の内周面には摺動中子の背面が当接するストッパ部４が４箇所設けられ、額縁部３の四隅には位置決めピン５が取り付けられている。   The casting mold apparatus is composed of a fixed mold 1 and a movable mold 2, and the periphery of the mating surface of the fixed mold 1 is an integrally continuous frame portion 3, and a sliding core is formed on the inner peripheral surface of the frame portion 3. There are provided four stopper portions 4 with which the back surface of the frame contacts, and positioning pins 5 are attached to the four corners of the frame portion 3.

可動型２には摺動中子６が係合している。摺動中子６は４つ設けられ、各摺動中子６には凸部７が形成され、各摺動中子６が可動型２の中央に向かって移動することで、固定型１、可動型２及び摺動中子６間に製品キャビティＣが形成される。そして、この状態で凸部７の背面（テーパ面）７ａが前記固定型１のストッパ部４に当接する。   A sliding core 6 is engaged with the movable mold 2. Four sliding cores 6 are provided, each of the sliding cores 6 is formed with a convex portion 7, and each of the sliding cores 6 moves toward the center of the movable mold 2, whereby the fixed mold 1, A product cavity C is formed between the movable mold 2 and the sliding core 6. In this state, the back surface (tapered surface) 7 a of the convex portion 7 comes into contact with the stopper portion 4 of the fixed mold 1.

前記摺動中子６の凸部７の高さは、図２に示すように、製品キャビティＣの高さと略等しく設定され、鋳造時に摺動中子６に作用する鋳造圧力を額縁部３に設けたストッパ部４の全面で受けるようにしている。   As shown in FIG. 2, the height of the convex portion 7 of the sliding core 6 is set substantially equal to the height of the product cavity C, and the casting pressure acting on the sliding core 6 during casting is applied to the frame portion 3. The entire surface of the provided stopper portion 4 is received.

また、可動型２の四隅には前記位置決めピン５が係合する位置決め穴８が形成され、この位置決め穴８よりも中央寄りの部分に位置決め基準座９が設けられている。この位置決め基準座９は可動型２と一体的に設けられ、その高さは摺動中子６の凸部７の高さと等しくされている。   Further, positioning holes 8 with which the positioning pins 5 are engaged are formed at the four corners of the movable mold 2, and positioning reference seats 9 are provided at portions closer to the center than the positioning holes 8. The positioning reference seat 9 is provided integrally with the movable mold 2, and the height thereof is equal to the height of the convex portion 7 of the sliding core 6.

また、摺動中子６と位置決め基準座９の間にはスリット状の隙間が形成されるが、この隙間にはサイドキー１０を挿入し、このサイドキー１０によって摺動中子６が摺動する際のガイドと位置決めを行っている。   In addition, a slit-shaped gap is formed between the sliding core 6 and the positioning reference seat 9, and a side key 10 is inserted into this gap, and the sliding core 6 is slid by the side key 10. The guide and positioning are performed.

以上において、４つの摺動中子６を中心に移動せしめた状態で、固定型１と可動型２を型締めすると、摺動中子６の凸部７の背面が額縁部３に設けたストッパ部４に当接し、鋳造時の摺動中子６に作用する圧力をストッパ部４が受ける。ここで、ストッパ部４は固定型の周囲に一体的に形成した額縁部３の一部に設けられているので、鋳造圧力によってストッパ部４が後退したり変形することがなく、その結果摺動中子６も動かず、バリが発生することがない。   In the above, when the fixed mold 1 and the movable mold 2 are clamped with the four sliding cores 6 moved to the center, the stopper provided on the frame portion 3 is the back surface of the convex portion 7 of the sliding core 6. The stopper part 4 receives the pressure which contacts the part 4 and acts on the sliding core 6 during casting. Here, since the stopper part 4 is provided in a part of the frame part 3 integrally formed around the fixed mold, the stopper part 4 is not retracted or deformed by the casting pressure, and as a result, slides. The core 6 also does not move and burrs do not occur.

また、摺動中子６の位置決めを行う基準座９は可動型２の一部であるので、摺動中子６との間に生じる温度差は無視でき、固定型１と摺動中子６の熱膨張率の違いによって隙間が生じることもない。   Further, since the reference seat 9 for positioning the sliding core 6 is a part of the movable mold 2, the temperature difference generated between the sliding core 6 and the sliding core 6 can be ignored, and the fixed mold 1 and the sliding core 6 can be ignored. No gap is generated due to the difference in thermal expansion coefficient.

本発明に係る鋳造金型装置の型開き状態の斜視図The perspective view of the mold opening state of the casting die apparatus concerning this invention 本発明に係る鋳造金型装置の型締め状態の断面図Sectional drawing of the mold clamping state of the casting mold apparatus which concerns on this invention 従来の鋳造金型装置の型開き状態の斜視図A perspective view of a mold opening state of a conventional casting mold apparatus 従来の鋳造金型装置の型締め状態の断面図Sectional view of the mold clamping state of a conventional casting mold apparatus

符号の説明Explanation of symbols

１…固定型、２…可動型、３…額縁部、４…ストッパ部、５…位置決めピン、６…摺動中子、７…凸部、７ａ…凸部の背面、８…位置決め穴、９…位置決め基準座、１０…サイドキー
１０１…固定型、１０２…可動型、１０３…摺動中子、１０４…凸部、１０４ａ…凸部の背面、１０４ｂ…凸部の側面、１０５…ストッパ部、１０６…位置決め部、１０７…位置決め穴、１０８…位置決めピン
Ｃ…製品キャビティ。 DESCRIPTION OF SYMBOLS 1 ... Fixed type, 2 ... Movable type, 3 ... Frame part, 4 ... Stopper part, 5 ... Positioning pin, 6 ... Sliding core, 7 ... Convex part, 7a ... Back surface of convex part, 8 ... Positioning hole, 9 Reference positioning seat, 10 ... side key 101 ... fixed type, 102 ... movable type, 103 ... sliding core, 104 ... convex portion, 104a ... back surface of convex portion, 104b ... side surface of convex portion, 105 ... stopper portion, 106 ... Positioning part, 107 ... Positioning hole, 108 ... Positioning pin C ... Product cavity.

Claims (2)

固定型と可動型からなり、可動型には固定型との間で製品キャビティを形成する摺動中子を備えた鋳造金型において、前記固定型の型合わせ面には額縁部が一体的に突出し、この額縁部の内側面に型締め時に前記摺動中子の凸部背面に当接して鋳造圧力を受けるストッパ部が設けられ、また前記可動型の四隅には摺動中子の凸部と等しい高さの位置決め基準座が設けられ、この位置決め基準座と摺動中子の側面との間にサイドキーが設けられていることを特徴とする鋳造金型。 A casting mold comprising a fixed mold and a movable mold, wherein the movable mold has a sliding core that forms a product cavity with the fixed mold, and a frame portion is integrally formed on the mold mating surface of the fixed mold A stopper is provided on the inner surface of the frame to contact the back of the convex portion of the sliding core and receive casting pressure when the mold is clamped. The convex portions of the sliding core are provided at the four corners of the movable mold. A casting mold characterized in that a positioning reference seat having a height equal to is provided, and a side key is provided between the positioning reference seat and the side surface of the sliding core . 請求項１に記載の鋳造金型装置において、前記摺動中子の凸部の高さは、前記製品キャビティの高さと略等しいことを特徴とする鋳造金型装置。   2. The casting mold apparatus according to claim 1, wherein a height of the convex portion of the sliding core is substantially equal to a height of the product cavity.
JP2007281096A 2007-10-30 2007-10-30 Casting mold equipment Expired - Fee Related JP4330646B2 (en)

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Application Number Priority Date Filing Date Title
JP2007281096A JP4330646B2 (en) 2007-10-30 2007-10-30 Casting mold equipment
PCT/JP2008/003001 WO2009057263A1 (en) 2007-10-30 2008-10-23 Casting die device
CN200880114287.3A CN101842176B (en) 2007-10-30 2008-10-23 Casting die device
US12/740,592 US8091611B2 (en) 2007-10-30 2008-10-23 Casting die device

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JP4330646B2 true JP4330646B2 (en) 2009-09-16

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WO (1) WO2009057263A1 (en)

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US20110036529A1 (en) 2011-02-17
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CN101842176B (en) 2013-01-09
CN101842176A (en) 2010-09-22

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